However there is still more, Eckenwalder (2009) states that leaf chemistry and DNA sequences (Mao et al., 2012) show that Alaska-cedar belongs in Cupressus and hence Cupressus nootkatensis. It was thought that at decision would be made at 2011 International Botanical Congress, but for some reason the proposal did not make it to the committee which decides taxonomic conflicts (John Russell, 2011). The name Xanthocyparis was proposed for conservation, but until that is decided on, it is correctly classified in Callitropsis. Thus Callitropsis would be the correct name for these species (Golden Vietnamese Cypress and Alaska-cedar) under the ICBN when treated in a distinct genus. 91:1872), while confirming the above relationship with further evidence, pointed out that an earlier nomenclatural combination in the genus Callitropsis existed, as Callitropsis nootkatensis (D.Don) Oerst., published in 1864 but overlooked or ignored by other subsequent authors. Apparently a good deal of evidence justifies placing both species in the same genus, and hence Alaska-cedar was renamed as Xanthocyparis nootkatensis. The tree was classified in a new genus in the family Cupressaceae as Xanthocyparis vietnamensis (Golden Vietnamese Cypress), its closest relative appears to be the Alaska-cedar. Taxonomic changes: A new conifer discovered in northen Vietnam was described scientifically in 2002 (Farjon et al.).For a comparison of the four native "cedars" see Four "cedar" species native to Oregon It is one of the four native "cedars" (so-called) in Oregon. Hardy to USDA Zone 4 Native range is along the coast of Alaska and British Columbia, then in the Cascades of Washington and Oregon, just reaching northern California. Cones globose (round or spherical shape), 1 cm across, ripen in the second year, 4-6 scales, each with a hook-like, protruding, erect tip. Male flowers yellow and at the ends of branclets. Leaves tightly appressed, dark bluish or grayish green, in 4 rows of similar size (3-6 mm long) (in alternating opposite pairs), an unpleasant, mildewy odor when bruised. Conifer (but not a true cedar), evergreen tree, 60-90 ft (18-27 m) tall, slender conical, with drooping branches and flattened sprays.
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